/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.connector.jdbc.dialect;

import java.util.Arrays;
import java.util.List;
import java.util.Optional;

/**
 * Default JDBC dialects.
 */
public final class JdbcDialects {

	private static final List<JdbcDialect> DIALECTS = Arrays.asList(
		new DerbyDialect(),
		new MySQLDialect(),
		new PostgresDialect()
	);

	/**
	 * Fetch the JdbcDialect class corresponding to a given database url.
	 */
	public static Optional<JdbcDialect> get(String url) {
		for (JdbcDialect dialect : DIALECTS) {
			if (dialect.canHandle(url)) {
				return Optional.of(dialect);
			}
		}
		return Optional.empty();
	}
}
